Keith Womer

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We study an assignment type resource-constrained project scheduling problem with resources being multi-skilled personnel to minimize the total staffing costs. We develop a hybrid Benders decomposition (HBD) algorithm that combines the complimentary strengths of both mixed-integer linear programming (MILP) and constraint programming (CP) to solve this(More)
We study a project scheduling problem with multipurpose resources (PSMPR). A multipurpose resource is a resource unit that is " versatile " enough to perform different types of operations. A mixed-integer linear programming (MILP) and a constraint programming (CP) formulation for the standard PSMPR model are each presented in this paper. We also propose a(More)
Companies often choose to defer irreversible investments to maintain valuable managerial flexibility in an uncertain world. For some technology-intensive projects, technology uncertainty plays a dominant role in affecting investment timing. This article analyzes the investment timing strategy for a firm that is deciding about whether to adopt one or the(More)
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